class Xjj {
  constructor(private _age: number) {}
  get age() {
    return this._age - 10;
  }
  set age(age: number) {
    this._age = age + 3;
  }
}

const mm = new Xjj(28);
mm.age = 25;
console.log(mm.age);

// static
class PP {
  static sayHi() {
    return "hi";
  }
}
const pp = new PP();
console.log(PP.sayHi());
